I definitely think some are likely. If we're being specific to next season, I see Richards, Quincey, Miller and Andersson moving on. I'm not totally sold on Datsyuk retiring a year early; Franzen's more likely. I also think one of Smith/Kindl gets moved this year (or in the offseason), and one gets to finish his contract. I'd prefer to see Ouellet, Marchenko AND Jensen up next season, but I think it'll be two of the three. Sproul's on the outside looking in right now, IMO.
I can see a battle between some of the skilled players, but I think Nyquist is safe. I wouldn't be surprised to see Jurco and Pulkkinen pitted against each other, though. Different style of player, but they're going to feel a push from Mantha and Bertuzzi.
I'm torn on the Helm thing, but I'm definitely hoping for it. It just doesn't make sense to keep him with Larkin and Athanasiou on their way up soon.
I wasn't implying Datsyuk would leave a year early. Sorry if it came across that way. I think he'll leave at the end of his contract.